The present invention provides a kind of system (200), for generating radio frequency, RF, pumping signal baryon via RF excitation coils (114) magnetic resonance system (100). The system includes that generator unit (203-206) each includes synthesizer (211-214), RF amplifiers (231-234) and the first feedback control loop (251-254) unit and is suitable for configuration synthesizer and generates RF signals, by RF amplifiers there is predefined first characteristics of signals and combiner (261) to be suitable for being amplified by radio frequency amplifier for composite signal after the second amplification and obtains RF pumping signals.
